steering column shifter wobble

I got in my truck ( '91 Suburban ) saturday , cranked her up and reached to put her in reverse when I noticed the column shifter started wiggling not only in the actual shifter bars' mount, but the whole ring that extends around the column as well. It was tight a shifted perfectly for the past two years and I have no idea how it loosened up. If the truck didn't have any sign of a break-in and wasn't still full of christmas presents I would think someone had screwed up the column trying to crank it.

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